Securing device for railway-car-coupling pivot-pins.



M. B. GIBERSON.

SECURING DEVICE FOR RAILWAY GAR COUPLING PIVOT PINS.

APPLICATION FILED MAR.30, 1914.

1,1 33,632. Patented Mar. 30, 1915.

I l l I l l l WITNESSES: l/Vl/ENTOI? 'MMYOW/fi, Gibarao M 02% m w ziimamA TTOHNEK) THE NORRIS PETERS C0.. FHOTO-LITHQ, WASHINGTON. D C,

invention to I ID dTAiES PATENT MASON B. GIBERSON, 0F DETROIT, MICHIGAN,ASSIGNOR T0 MONARCH STEEL CASTINGS COMPANY, OF DETROIT, MICHIGAN, ACORPORATION GE MICHIGAN.

SECURING DEVICE FOR RAILWAY-CAR-COUPLII-IG PIJUT-PINS.

messes.

Application filed March 30, 1914.

T aZZ whom it may concern Be it known that I, Mason B. GriBnRsoN, acitizen of the United States of America, residing at Detroit, in thecounty of Wayne and State of Michigan, have invented certain new anduseful Improvements in Securing Devices for RailwayCar-Coupler Pivot-Pins, of which the following is a specifica tion, reference being hadtherein to the accompanying drawings. 5

The invention relates to car couplers of the J anney type and it is theobject of the provide a simple construction by which the pivot pin isheld from accidental disengagement.

In the drawings :Figure 1 is a side elevation of a portion of a carcoupler showing my improvement applied thereto; Fig. 2 is a sideelevation of one of the retaining lugs; and Fig. 3 is a section on lineir-x Fig. 2.

I'Vith the car couplers of the type above referred to the coupling hookor knuckle is secured to the coupler head by a pivot pin, the latterbeing usually inserted from the top and being provided with a head forretaining it in position. It frequently happens, however, that the pinis broken, which permits the portion below the brake to drop out. Withthe present invention this result is prevented by a device whicheffectually locks the pin from disengagement, while the locking deviceitself is retainedin position by the pin.

In detail, A is the coupler head, B the hook or knuckle, and C theheaded pin, all of usual construction.

D is the cotter-pin which passes through an aperture in the pivot pinbelow the coupler head to prevent it from jumping upward, this alsobeing of usual construction. Upon opposite sides of the coupler pin Care depending lugs E, preferably formed inte gral with the coupler head.These lugs are Specification of Letters Patent.

Patented Mar. 3th, M915. Serial No. 828,380.

provided with recesses F on their inner sides adapted to receive aretaining pin G- which eXtends across the space between said lugsimmediately below the pivot pin 0. The pin G is insertible into therecesses B through entrance slots H formed in the up per portion of thelugs E. These entrance slots are so positioned that when the pivot pin Cis in normal position and held therein by the cotter-pin D, the pin Gwill be held at the bottom of the recesses F and will be prevented fromdisengagement through the entrance slots H. Thus the pin 6: retains thepin C, while the pin C retains the pin G. As a consequence the couplerpin can not hecome accidentally disen aged, but at any time when thecotter-pin D is withdrawn and the pin C lifted the pin G may be readilydetached.

WV hat I claim as my invention is In a car coupler, the combination witha coupler head and knuckle pin, of a pair of lugs projecting downwardfrom said head on opposite sides of said pin, said lugs havinglongitudinal recesses in their inner faces closed at the lower ends andprovided with laterally opening entrance slots at their upper endsextending at right angles said recesses, and a cross pin engageable anddisengageable with said recesses through said entrance slots only whensaid knuckle pin is removed, said. cross pin norms l; resting at thebottom of said recesses forming a stop for said knuckle pin and beingprevented from jumping out by said knuckle pin and the right angle turnin said entrance slots.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES P. BARRY, HENRIETTA E. BOWMAN.

copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eetente, Washington, D. G.

